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The LM5148-Q1 is an 80V ultra-low IQ synchronous step-down DC/DC controller for high current single output applications. The LM5148-Q1 can be set to operate in interleaved mode (parallel output) for precise current sharing and is suitable for high current applications. It can operate at input voltages as low as 3.5V and duty cycles close to 100% if required. 

The LM5148-Q1 has a unique EMI reduction feature called Dual Random Spread Spectrum (DRSS). Combining low frequency delta modulation with high frequency random modulation reduces EMI interference in the low and high frequency bands respectively. This hybrid technique complies with the various resolution bandwidth (RBW) settings specified in the industry's common EMC tests.

Features

- Compliant with AEC-Q100 standard for automotive applications.

- Device temperature class 1: -40°C to +125°C ambient operating temperature range Ambient operating temperature range

- Functionally safe

- Documentation to assist with functional safety system design

- Integrated EMI mitigation

- Optional Dual Random Spread Spectrum (DRSS) feature for enhanced EMI reduction performance in both low and high frequency bands

- Optimised for CISPR 25 Level 5 requirements

- Versatile synchronous step-down DC/DC controller

- Wide input voltage range of 3.5V to 80V

- 1% accuracy, fixed 3.3V/5V/12V or 0.8V to 55V adjustable output voltage

- 150°C maximum junction temperature

- Non-destructive DCR or shunt current detection

- Quiescent current at shutdown 2.3 µA (typical)

- 9.5µA low leakage current

- Internal soft-start ramp of 3ms

- Up to two phases can be stacked

- Internal bootstrap diode

- Switching frequency range of 100kHz to 2.2MHz

- Synchronous input and synchronous output functions

- Selectable PFM or FPWM modes

- Inherent protection features for robust design

- Internal intermittent mode overcurrent protection

- Enable and PGOOD functions

- VCC, VDDA and gate drive UVLO protection

- Internal or external loop compensation

- Thermal shutdown protection with hysteresis function

- Create customised designs with the LM5148-Q1 and with WEBENCH® Power Designer

Applications

- Automotive electronic systems

- Advanced Driver Assistance Systems (ADAS)

- Infotainment systems and instrument clusters

- Body electronics

• 1.Is the inventory and price seen on the platform accurate?

  A: all online goods on the shelves can be ordered online, but considering the large liquidity of spot inventory, it is not possible to achieve 100% accuracy at present. In case of any abnormality, you can contact our company online and give the corresponding solution.

• 2.Are all our products genuine?

  A: our self-supporting products are from cooperative domestic and foreign original factories or authorized agents, and the source can be traced to ensure the original and authentic products.

• 3.Can you provide the qualification certificate of the original factory or agent?

  A: at present, our self-employed brands TI，ST，ADI，NXP，LATTICE，CYPRESS，INFINEON，XILINX and other first-line brands. Other channels are the original factory and agency channels. If necessary, we can communicate and confirm according to the specific brand and model.

• 4.Can I make an inquiry through the company's website?

  A: You can inquire through the website, or by phone and email.

• 5.When can I deliver the goods after placing an order? How long will it take to get there?

  A: the delivery date is marked in most commodity information. You can estimate the delivery time of the commodity according to the delivery date. The specific arrival time depends on the warehouse where the commodity is located and the logistics mode you choose.

• 6.Can the company issue an invoice?

  A: you can issue ordinary invoices for individual users or special VAT invoices for enterprise users.